hdf5/test/gen_udlinks.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Programmer:  James Laird
 *              Tuesday, June 6, 2006
 *
 *  This program creates HDF5 files with user-defined links.  These files
 *  should be created on a little-endian and a big-endian machine.
 *  They will be named according to the platform and should
 *  be placed in the hdf5/test directory so that the links test can use them.
 *
 */

#include "hdf5.h"
#include <string.h>

#define NAME_LE_1     "le_extlink1.h5"
#define NAME_LE_2     "le_extlink2.h5"
#define NAME_BE_1     "be_extlink1.h5"
#define NAME_BE_2     "be_extlink2.h5"
#define NAME_BUF_SIZE 25

int
main(void)
{
    hid_t fid1 = -1;
    hid_t fid2 = -1;
    hid_t gid  = -1;
    char  filename1[NAME_BUF_SIZE];
    char  filename2[NAME_BUF_SIZE];

    /* Name the files differently depending on the endianness of this platform */

    switch (H5Tget_order(H5T_NATIVE_INT)) {
        case H5T_ORDER_LE:
            strcpy(filename1, NAME_LE_1);
            strcpy(filename2, NAME_LE_2);
            break;
        case H5T_ORDER_BE:
            strcpy(filename1, NAME_BE_1);
            strcpy(filename2, NAME_BE_2);
            break;
        case H5T_ORDER_ERROR:
        case H5T_ORDER_VAX:
        case H5T_ORDER_MIXED:
        case H5T_ORDER_NONE:
        default:
            goto error;
    }

    /* Create the two files */
    if ((fid1 = H5Fcreate(filename1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;
    if ((fid2 = H5Fcreate(filename2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;

    /* Create two groups in the second file */
    if ((gid = H5Gcreate2(fid2, "group", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;
    if ((H5Gclose(gid)) < 0)
        goto error;
    if ((gid = H5Gcreate2(fid2, "group/subgroup", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;
    if ((H5Gclose(gid)) < 0)
        goto error;

    /* Create an external link in the first file pointing to the group in the second file */
    if (H5Lcreate_external(filename2, "group", fid1, "ext_link", H5P_DEFAULT, H5P_DEFAULT) < 0)
        goto error;

    if ((H5Fclose(fid1)) < 0)
        goto error;
    if ((H5Fclose(fid2)) < 0)
        goto error;

    return 0;

error:
    H5E_BEGIN_TRY
    {
        H5Fclose(fid1);
        H5Fclose(fid2);
        H5Gclose(gid);
    }
    H5E_END_TRY
    return 1;
}